An underwater videographer has just published mesmerizing footage of the world’s largest, longest, and heaviest known jellyfish species—a lion’s mane jelly. “Several minutes into the dive, I noticed a ...

But the lion’s mane jelly isn’t just a certified Long Boi; according to Guinness World Records, it’s also the heaviest ...

A mesmerising video of the world's largest, longest, and heaviest known jellyfish species has been captured by an underwater videographer. John Roney shared the footage of a lion’s mane jellyfish that ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. When people think of lions, the image that comes to mind is ...